• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Measuring Some Vintage Speakers

bconline

Member
Joined
Nov 29, 2023
Messages
48
Likes
648
I thought this group would be interested in how some vintage speakers compare to each other under the same measuring conditions. I have a collection of vintage speakers and simple measuring setup. No Klippel machine for me! I measured the frequency response of each speaker with:
  • Laptop PC with Creative soundcard
  • REW software
  • Dayton UMM-6 microphone, with calibration loaded in REW
  • Random Denon amplifier
  • 1 meter distance, on the tweeter axis
  • 20x24 garage with hard floor and 9.5' ceiling
  • Small amount of damping on the floor
All of the measurement suffer from a floor bounce dip at ~80-90hz depending on the height of the woofer and mic. Sorry about that.

Here's the setup.
1711831952122.png


Here's the collection.
1711832393593.png


Here's all the graphs together. I'll post each frequency response curve separately.
1711833201662.png
 
OP
B

bconline

Member
Joined
Nov 29, 2023
Messages
48
Likes
648
This one is an MLTL that I built using the Mark Audio Alpair 10.2 full range driver. Remarkable bass from a 4.5" driver. However, the driver has a peak at ~8khz. The measurement also suffers from more floor/ceiling bounce problems due to the high mounted "woofer". I use this set daily with DSP to even out the in-room response.

1711837028109.png
1711837086333.png
 
Last edited:
OP
B

bconline

Member
Joined
Nov 29, 2023
Messages
48
Likes
648
This one is a true classic - Yamaha NS1000M studio monitor from the 1970's and '80's. Most known for its 3.5" beryllium dome midrange and matching beryllium dome tweeter. Very crisp and clear, but a bit shy on bass. I thought about extending the cabinet and porting it, but didn't want to cut up this nice pair.

1711837359058.png
1711837669351.png
 
Last edited:

restorer-john

Grand Contributor
Joined
Mar 1, 2018
Messages
12,970
Likes
39,754
Location
Gold Coast, Queensland, Australia
Top Bottom